PCI: use pci_find_ext_capability everywhere
Remove some open coded (and buggy) versions of pci_find_ext_capability
in favor of the real routine in the PCI core.
Tested-by: Tomasz Czernecki <czernecki@gmail.com>
Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index 77036f4..e390707 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -105,7 +105,7 @@
unsigned long flags;
int pos;
- pos = pci_find_aer_capability(pdev->port);
+ pos = pci_find_ext_capability(pdev->port, PCI_EXT_CAP_ID_ERR);
/*
* Must lock access to Root Error Status Reg, Root Error ID Reg,
* and Root error producer/consumer index
@@ -252,7 +252,7 @@
u32 status;
int pos;
- pos = pci_find_aer_capability(dev);
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
/* Disable Root's interrupt in response to error messages */
pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, 0);
@@ -316,7 +316,7 @@
pci_write_config_word(dev, pos + PCI_EXP_DEVSTA, reg16);
/* Clean AER Root Error Status */
- pos = pci_find_aer_capability(dev);
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
if (dev->error_state == pci_channel_io_normal)
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index ee5e7b5..1ff21f6 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -28,36 +28,6 @@
static int forceload;
module_param(forceload, bool, 0);
-#define PCI_CFG_SPACE_SIZE (0x100)
-int pci_find_aer_capability(struct pci_dev *dev)
-{
- int pos;
- u32 reg32 = 0;
-
- /* Check if it's a pci-express device */
- pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
- if (!pos)
- return 0;
-
- /* Check if it supports pci-express AER */
- pos = PCI_CFG_SPACE_SIZE;
- while (pos) {
- if (pci_read_config_dword(dev, pos, ®32))
- return 0;
-
- /* some broken boards return ~0 */
- if (reg32 == 0xffffffff)
- return 0;
-
- if (PCI_EXT_CAP_ID(reg32) == PCI_EXT_CAP_ID_ERR)
- break;
-
- pos = reg32 >> 20;
- }
-
- return pos;
-}
-
int pci_enable_pcie_error_reporting(struct pci_dev *dev)
{
u16 reg16 = 0;
@@ -67,6 +37,10 @@
if (!pos)
return -EIO;
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
+ if (!pos)
+ return -EIO;
+
pci_read_config_word(dev, pos+PCI_EXP_DEVCTL, ®16);
reg16 = reg16 |
PCI_EXP_DEVCTL_CERE |
@@ -102,7 +76,7 @@
int pos;
u32 status, mask;
- pos = pci_find_aer_capability(dev);
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
if (!pos)
return -EIO;
@@ -123,7 +97,7 @@
int pos;
u32 status;
- pos = pci_find_aer_capability(dev);
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
if (!pos)
return -EIO;
@@ -502,7 +476,7 @@
* Correctable error does not need software intevention.
* No need to go through error recovery process.
*/
- pos = pci_find_aer_capability(dev);
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
if (pos)
pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS,
info.status);
@@ -542,7 +516,7 @@
reg16 &= ~(SYSTEM_ERROR_INTR_ON_MESG_MASK);
pci_write_config_word(pdev, pos + PCI_EXP_RTCTL, reg16);
- aer_pos = pci_find_aer_capability(pdev);
+ aer_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
/* Clear error status */
pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, ®32);
pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, reg32);
@@ -579,7 +553,7 @@
u32 reg32;
int pos;
- pos = pci_find_aer_capability(pdev);
+ pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
/* Disable Root's interrupt in response to error messages */
pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, 0);
@@ -618,7 +592,7 @@
{
int pos;
- pos = pci_find_aer_capability(dev);
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
/* The device might not support AER */
if (!pos)
@@ -755,7 +729,6 @@
return AER_SUCCESS;
}
-EXPORT_SYMBOL_GPL(pci_find_aer_capability);
EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index 890f0d2..2e091e0 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -195,24 +195,11 @@
/* PME Capable - root port capability */
if (((reg16 >> 4) & PORT_TYPE_MASK) == PCIE_RC_PORT)
services |= PCIE_PORT_SERVICE_PME;
-
- pos = PCI_CFG_SPACE_SIZE;
- while (pos) {
- pci_read_config_dword(dev, pos, ®32);
- switch (reg32 & 0xffff) {
- case PCI_EXT_CAP_ID_ERR:
- services |= PCIE_PORT_SERVICE_AER;
- pos = reg32 >> 20;
- break;
- case PCI_EXT_CAP_ID_VC:
- services |= PCIE_PORT_SERVICE_VC;
- pos = reg32 >> 20;
- break;
- default:
- pos = 0;
- break;
- }
- }
+
+ if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR))
+ services |= PCIE_PORT_SERVICE_AER;
+ if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_VC))
+ services |= PCIE_PORT_SERVICE_VC;
return services;
}